A war-torn Olympic relic is being overtaken by graffiti and nature.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

Museum in a swimming pool where the water still flows.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

A medieval military street hidden beneath a charming French fishing village.

Artist's eccentric property excessively decorated with found objects and work of his own.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

The sunken structure looks like the victim of a catastrophic flood.

Do these monsters look familiar? The gargoyles on this church are all from pop culture.

Home to the "Rat King" of Nantes and other wonders of the natural world.

This otherworldly French waterfall looks like its waters have turned to stone.

The mummified heart of Louis XVII, the lost dauphin of the French Revolution.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

Grandpa Rainbow felt the neighborhood needed some color, so he picked up a paintbrush and went to work.

A meow-velous tribute to a beloved street cat, made famous on the internet.

Hidden beneath the streets of London is a secret subway that only carried mail.

An incredible garden taking over the interior of a massive sinkhole.

A massive metal lobster welcomes tourists to a roadside restaurant.

A collection of outdoor mystical statues paying homage to indigenous Australians and ecological stewardship.

This seven story Japanese love hotel now stands in ruins.

This historical theme park celebrates all things noodle.

The world's shortest escalator doesn't seem to have any reason to exist other than to hold a world record.

"Excuse me sir, your submarine is blocking my building."